Author Archives: Martijn Verburg

Martijn (aka "The Diabolical Developer") is the co-founder and CTO of jClarity. He's a London Java Community leader, founder of the "Adopt a JSR" and "Adopt OpenJDK" programmes, a speaker at major conferences and the co-author of the Well-Grounded Java Developer.

1. February the 1st – RedMonk Analyst firm declares that Java is more popular & diverse than ever! The Java Ecosystem started off with a hiss and a roar in 2014 with the annual meeting of the Free Java room at FOSDEM. As well as the many fine deep technical talks on OpenJDK and related topics there was also a ...

Introduction I decided to combine two software loves of mine and perform some analysis on PCGen, a popular Java based open source character generator for role-playing games. I used Censum, our ( jClarity‘s) new Garbage Collection log analysis tool to perform the analysis. This write-up assumes you have a passing familiarity with Garbage Collection (GC) on the JVM. If you’re ...

This post will focus on the events big and small that occurred in 2012 and also take a look at some future predictions for 2013. Some of the predictions will be honest guesses, others…. well lets just say that my Diabolical side will have taken over . So without further adieu lets look at the year that was 2012 for ...

In case you haven’t heard, JavaFX 2 is the new Desktop / web / client framework for Java. It’s had a considerable overhaul since JavaFX 1 (which was frankly not that impressive). Out has gone the custom scripting language, and instead you can write it using standard Java and an XML-based language for the actual UI presentation. So today, a ...

Hi All, Recently I’ve received a bunch of private correspondence from people confused/worried over the change in the default Java packaging for Linux. For many Linux distributions, the official Sun/Oracle version of Java has been packaged up as the default Java for the platform. However, due to a recent licensing change, this will no longer be the case! So, is ...

The following is a modified snippet from a draft of The Well-Grounded Java Developer. It gives you a quick taster of how much easier it is to manipulate files in Java 7 than in previous versions. By using the new Files class and its many utility methods, you can perform the following operations on files with only a single line ...

The discussion on the lambda-dev mailing list has started to address the issue of what the Java language syntax for lambdas / function literals ought to look like. Let’s look at a slightly non-trivial example and try to tease the issues out. The Perl people have a nice example of something which uses function references in a somewhat functional way ...

Hopefully, by now, everyone knows that Apple joined the OpenJDK project last year. What does that mean? Apple will contribute the code that they used for their private Mac Java builds as GPL code to OpenJDK Oracle will take over the stewardship of the Mac port of Java Over time, the Mac platform will become a completely first-class citizen in ...

Due to Java’s Reflection API we have been able to inspect and alter program execution at runtime. In particular, we can observe interfaces/classes/methods and fields at runtime without knowing their names at compile time. JDK 7 introduces a new player to this dynamic/runtime inspection, the method handle (i.e. a subclass of the abstract class java.dyn.MethodHandle). Method handles gives us unrestricted ...

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